ARCMSR_SIGNATURE_SET_CONFIG
writel(ARCMSR_SIGNATURE_SET_CONFIG, \
writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
writel(ARCMSR_SIGNATURE_SET_CONFIG, ®->msgcode_rwbuffer[0]);
writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
writel(ARCMSR_SIGNATURE_SET_CONFIG, ®->msgcode_rwbuffer[0]);
acb->msgcode_rwbuffer[0] = ARCMSR_SIGNATURE_SET_CONFIG;